The Polymer80 Phoenix G150 80% lower receiver jig is a tool designed for use with the G150 lower receiver, which is a universal 80% lower receiver compatible with multiple firearms platforms including the AR-15, AR-9, and LR-308. The jig is used to guide the user in drilling and milling the necessary holes and pockets to complete the lower receiver and turn it into a functional firearm. The Phoenix G150 jig includes all the necessary drilling and milling templates, as well as instructions, to ensure the lower receiver is completed correctly and safely. The jig is made of high-strength polymer and is reusable for multiple builds. It features an integrated drill guide and depth stop, making it easier to achieve precise cuts and holes. Additionally, the jig includes a hardened steel drill bushing and alignment pins, ensuring proper alignment of the drill bit and lower receiver. The Phoenix G150 jig is compatible with multiple firearms platforms and is designed to work with standard lower parts kits.